<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="icon" href="%PUBLIC_URL%/favicon.ico">
    <!-- <link rel="stylesheet" href="/bootstrap.css"> -->
    <link rel="stylesheet" href="%PUBLIC_URL%/bootstrap.css">
    <style>
        .activeNav{
            background-color: rgb(255, 198, 9) !important;
            color:#fff !important;
        }
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    <title>react 扩展</title>
</head>
<body>
    <div id="root"></div>
</body>
</html>